Magic family of discretely sized ultrabright SI nanoparticles

G. Belomoin; J. Therrien; A. Smith; S. Rao; R. Twesten; S. Chaieb; M. H. Nayfeh; L. Wagner; L. Mitas

Magic family of discretely sized ultrabright SI nanoparticles

G. Belomoin, J. Therrien, A. Smith, S. Rao, R. Twesten, S. Chaieb^*, M. H. Nayfeh, L. Wagner, L. Mitas

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

4 Scopus citations

Abstract

We describe a procedure for dispersion bulk Si into a family discretely sized ultrasmall ultrabright nanoparticles. We demonstrate that electrochemically etched, hydrogen capped Si_nH_x clusters with n larger than 20 are obtained within a family of discrete sizes. These sizes are 1.0 (Si₂₉), 1.67 (Si₁₂₃), 2.15, 2.9, and 3.7 nm diameter. We characterize the particles via direct electron imaging, excitation and emission optical spectroscopy, chromatography, and colloidal crystallization. The band gaps and emission bands are measured. The smallest four are ultrabright blue, green, yellow, and red luminescent particles. The availability of discrete sizes and distinct emission in the red, green and blue range is useful for biomedical tagging, RGB displays, and flash memories.

Original language	English (US)
Pages (from-to)	475-480
Number of pages	6
Journal	Materials Research Society Symposium - Proceedings
Volume	703
State	Published - 2002
Externally published	Yes
Event	Nanophase and Nanocomposite Materials IV - Boston, MA, United States Duration: Nov 26 2001 → Nov 29 2001

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

@article{2db05f40531d4f378d4b2fc8dc790f9d,

title = "Magic family of discretely sized ultrabright SI nanoparticles",

abstract = "We describe a procedure for dispersion bulk Si into a family discretely sized ultrasmall ultrabright nanoparticles. We demonstrate that electrochemically etched, hydrogen capped SinHx clusters with n larger than 20 are obtained within a family of discrete sizes. These sizes are 1.0 (Si29), 1.67 (Si123), 2.15, 2.9, and 3.7 nm diameter. We characterize the particles via direct electron imaging, excitation and emission optical spectroscopy, chromatography, and colloidal crystallization. The band gaps and emission bands are measured. The smallest four are ultrabright blue, green, yellow, and red luminescent particles. The availability of discrete sizes and distinct emission in the red, green and blue range is useful for biomedical tagging, RGB displays, and flash memories.",

author = "G. Belomoin and J. Therrien and A. Smith and S. Rao and R. Twesten and S. Chaieb and Nayfeh, {M. H.} and L. Wagner and L. Mitas",

year = "2002",

language = "English (US)",

volume = "703",

pages = "475--480",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

note = "Nanophase and Nanocomposite Materials IV ; Conference date: 26-11-2001 Through 29-11-2001",

}

TY - JOUR

T1 - Magic family of discretely sized ultrabright SI nanoparticles

AU - Belomoin, G.

AU - Therrien, J.

AU - Smith, A.

AU - Rao, S.

AU - Twesten, R.

AU - Chaieb, S.

AU - Nayfeh, M. H.

AU - Wagner, L.

AU - Mitas, L.

PY - 2002

Y1 - 2002

N2 - We describe a procedure for dispersion bulk Si into a family discretely sized ultrasmall ultrabright nanoparticles. We demonstrate that electrochemically etched, hydrogen capped SinHx clusters with n larger than 20 are obtained within a family of discrete sizes. These sizes are 1.0 (Si29), 1.67 (Si123), 2.15, 2.9, and 3.7 nm diameter. We characterize the particles via direct electron imaging, excitation and emission optical spectroscopy, chromatography, and colloidal crystallization. The band gaps and emission bands are measured. The smallest four are ultrabright blue, green, yellow, and red luminescent particles. The availability of discrete sizes and distinct emission in the red, green and blue range is useful for biomedical tagging, RGB displays, and flash memories.

AB - We describe a procedure for dispersion bulk Si into a family discretely sized ultrasmall ultrabright nanoparticles. We demonstrate that electrochemically etched, hydrogen capped SinHx clusters with n larger than 20 are obtained within a family of discrete sizes. These sizes are 1.0 (Si29), 1.67 (Si123), 2.15, 2.9, and 3.7 nm diameter. We characterize the particles via direct electron imaging, excitation and emission optical spectroscopy, chromatography, and colloidal crystallization. The band gaps and emission bands are measured. The smallest four are ultrabright blue, green, yellow, and red luminescent particles. The availability of discrete sizes and distinct emission in the red, green and blue range is useful for biomedical tagging, RGB displays, and flash memories.

UR - http://www.scopus.com/inward/record.url?scp=0036354147&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0036354147

SN - 0272-9172

VL - 703

SP - 475

EP - 480

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Nanophase and Nanocomposite Materials IV

Y2 - 26 November 2001 through 29 November 2001

ER -

Magic family of discretely sized ultrabright SI nanoparticles

Abstract

ASJC Scopus subject areas

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